1954 Alfa Romeo AR 51 vs. 1955 Bentley S1
To start off, 1955 Bentley S1 is newer by 1 year(s). Which means there will be less support and parts availability for 1954 Alfa Romeo AR 51. In addition, the cost of maintenance, including insurance, on 1954 Alfa Romeo AR 51 would be higher. At 4,886 cc (6 cylinders), 1955 Bentley S1 is equipped with a bigger engine. With that said, vehicle weight also plays an important factor in acceleration. 1955 Bentley S1 weights approximately 630 kg more than 1954 Alfa Romeo AR 51.
Because 1954 Alfa Romeo AR 51 is four wheel drive (4WD), it will have significant more traction and grip than 1955 Bentley S1. In wet, icy, snow, or gravel driving conditions, 1954 Alfa Romeo AR 51 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. 1955 Bentley S1 has automatic transmission and 1954 Alfa Romeo AR 51 has manual transmission. 1954 Alfa Romeo AR 51 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1955 Bentley S1 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1954 Alfa Romeo AR 51 | 1955 Bentley S1 | |
| Make | Alfa Romeo | Bentley |
| Model | AR 51 | S1 |
| Year Released | 1954 | 1955 |
| Engine Position | Front | Front |
| Engine Size | 1884 cc | 4886 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 63 HP | 0 HP |
| Engine Bore Size | 82.6 mm | 95.3 mm |
| Engine Stroke Size | 88 mm | 114.3 mm |
| Engine Compression Ratio | 7.0:1 | 6.7:1 |
| Top Speed | 105 km/hour | 166 km/hour |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Vehicle Weight | 1250 kg | 1880 kg |
| Vehicle Length | 3530 mm | 5390 mm |
| Vehicle Width | 1580 mm | 1910 mm |
| Wheelbase Size | 2210 mm | 3130 mm |
